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Page Title: APPENDIX B MAINTENANCE ALLOCATION
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TM 5-4210-220-12 APPENDIX B MAINTENANCE ALLOCATION Section I.  INTRODUCTION B-1.  GENERAL. a. This  section  provides  a  general  explanation  of  all  maintenance  and  repair  functions  authorized  at  various maintenance categories. b. The  Maintenance  Allocation  Chart  (MAC)  in  section  II  designates  overall  authority  and  responsibility  of  the performance   of   maintenance   functions   on   the   identified   end   item   or   component.      The   application   of   the maintenance functions to the end item or component will be consistent with the capacities and capabilities of the designated maintenance categories. c. Section  III  lists  the  tools  and  test  equipment  (both  special  tools  and  common  tools  sets)  required  for  each maintenance function as referenced from section II. B-2.  MAINTENANCE FUNCTIONS. Maintenance functions will be limited to and defined as follows. a. Inspect.    To  determine  the  serviceability  of  an  item  by  comparing  its  physical,  mechanical,  and/or  electrical characteristics with established standards through examination (e.g., by sight, sound or feel). b. Test.      To   verify   serviceability   and   to   detect   incipient   failure   by   measuring   the   mechanical   or   electrical characteristics of an item and comparing those characteristics with prescribed standards. c. Service.      Operations   required   periodically   to   keep   an   item   in   proper   operating   condition,   i.e.,   to   clean (decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed air supplies. d. Adjust.  To maintain, or regulate, within prescribed limits, by bringing into proper or exact position, or by setting the operating characteristics to the specified parameters. e. Aline.  To adjust specified variable elements of an item to bring about an optimum or desired performances. f. Calibrate.    To  compare  an  instrument  (measurement  standard  or  item  of  test,  measurement  and  diagnostic equipment) of unverified accuracy with an instrument of known and greater accuracy to detect and correct any discrepancy in the accuracy of the unverified instrument. g. Remove/Install.  To remove and install the same item when required  to  perform  service  or  other  maintenance functions.    Install  may  be  the  act  of  replacing,  setting,  or  fixing  into  position  a  spare,  repair  part,  or  module (component or assembly) in a manner to allow the proper functioning of the equipment or system. h. Replace.    To  remove  an  unserviceable  item  and  install  a  serviceable  counterpart  in  its  place.    "Replace"  is authorized by the MAC as shown in the 3rd position code of the SMR code. i. Repair.      The   application   of   maintenance   services   (inspect,   test,   service,   adjust,   aline,   calibrate,   replace), including   fault   location/troubleshooting   (the   process   of   investigating   and   detecting   the   cause   of   equipment malfunctioning, the act of isolating a fault within a system or unit under test (UUT), and disassembly/assembly (encompasses the step-by-step taking apart (or breakdown of a spare/functional B-1

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